Trolley



e 16, 1924. 1,519,321 G. S. MOORE TROLLEY Filed 001; 5, 1923 Giles S.Moore Patented Dec. 16, 1924.

1 UNITED STATES PATENT OFFICIEQ GILES S. Iv'IOORE, OF INDIANAPOLIS,INDIANA, ASSIGNOR TO TROLLEY SHOE-WHEEL COMPANY, OF INDIANAPOLIS,INDIANA, A GORIPORATION OF INDIANA.

TROLLEY.

Application filed October 5, 1923. Serial No. 666,785.

To all whom it may concern:

Be it known that I, GILES S. MOORE, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Trolleys, of whichthe following is a specification.

My said invention relates to an improved trolley of the sliding shoetype and it is an object of the same to provide improved means wherebythe car carrying the trolley can move backward as well as forwardwithout throwing the trolley off the wire.

A further object is to provide improved means whereby the trolley, if itshould leave the wire, will be prevented from damaging cross wires ortheiradjacent parts or the supporting devices for the wires. For thispurpose the trolley is so constructed that when it leaves the wire itimmediately moves from a horizontal position to a vertical position. Itcannot catch in overhead structures so as to damage them or itself, thisbeing partly due to the shape of the trolley whereby it can rotate asfreely as a wheel would in the harp and partly to the fact that thereare no positive steps preventing its rotation in either direction.

Another object is to provide an improved anti-friction wheel for usewhen the car is traveling backward.

Still another object is to provide improved removable wear parts on thetrolley.

Referring to the accompanying drawings which are made a part hereof andon which similar reference characters indicate similar parts,

Figure 1 is a side view of the trolley in. the position assumed when thecar is moving forward,

Figure 2, a similar view showing the posie tion assumed when the car ismoving in the contrary direction,

Figure 3, a plan of the trolley, and

Figure 4, a modified detail.

In the drawings reference character indicates a harp which may be of anydesirable or conventional type, this harp having a ournal 11 at eachside of the outer end of forks 12. A hollow pin 13 is supported in thejournals and is held in place by cotter pins 14. A bracket 15 isrotatably supported on the pin. This bracket has parallel wings at itssides, the body of the bracket between the wings being reduced along itsside and ends to provide a slot for the wire. A removable tread 16 issecured to one side of the bracket, the tread having wings correspondingto those of the body and giving the. device a generally oval form asviewed from either side. The dotted lines at 15 4 and 16 indicate thebottom of the slot for the trolley wire. The tread 16 is held in placeby threaded projections 17 extending through openings in the horizontalface of the bracket and provided with nuts 18.

At the other side of the bracket there is a removable insert 19 which isshorter than the first named one and is held in place by threadedrojections 20 and nuts 21. front of t e latter insert the bracket is cutthrough to provide a space for a roller 22 having flanges at oppositeends approximately in line with the sides of the insert 19. The roller22 is journaled on a hollow pin 23 held in journals as integral with thebracket by means of cotter pins 25.

The removable tread section 16 as will be evident from the drawingscontacts with the trolley wire 26 during the forward movement of the carand therefore receives the greatest amount of wear. This section canreadily be detached by removing the nuts 18 and a new sectionsubstituted. When the movement of the car is reversed, the

' removable insert 19, this insert cooperating with the roller 22 duringthe rearward movement. This roller is of importance in that the rollingcontact traveling ahead of the sliding contact overcomes the resistanceof the wire and the contact shoe and prevents the same from becomingexcessive, the excessive resistance on backward movement havingheretofore been a leading source of dissatisfaction with sliding controlshoes. In this construction the shoe can no longer press itself againstthe wire in such a man ner as to cause the pole to turn over by reasonof the car backing underneath it. The groove or slotforming the bracketfor the wire does not extend about the smaller end of the oval trolleyfor the reason that the wire ordinarily will not pass over this part ofthe trolley but as will be seen if the trolley should leave the wire itcan revolve freely on its pin on striking overhead constructions so asto do no more damage than would a wheel in similar circumstances.

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art that the insert might extend the full It should be noted that thedevice does not requireaspecially made harp but can be used With any ofthe conventional harps nowin use.

-'-It villloe obvionsto those skilled-imthe length of its contact faceas does the 13etread and the roller might be mounted 111 ournals on theinse 't as shoyvn n F gnre 4 Where the part corresponding to the in- ,sewhewnat 1 and is pr y des a iP YQ "I .i ;2 "earying am a fn a tlnnaslewe t 1 1 th r-d i i pla a abev ides he- M ny et e lmoi fi t qe wi ls h JP- pa n -t t os lsk leda thwa as ther ;f 1 1 no limi mysel t wha s s ownin ;the drawings and described in the speci- .-fia-tion, u 9 1 a iiieated a w ephelfe shown p nded claims- Haning {1:111:18 ;fully{described any said in .vention, hat I cla m as new ,and desire tosecure-,by Letters gBatent, is;

A ro ley zwmnrisiae a map a ipi o harp, a bracket onthe pin iree-lyrotatable w t re er n to i11 :hmtnand hatia eliding contact- :i'taoes atopposite sides ,of the pivot pin, and a neinoyable Wear shoe on eachface haying extensions eooperating ,with the bracket t 0 hQ1Cl4il1e$l1QQS in plaee, substantially as set ,i'Tor-th.

2. A trolley coinpnising a haigp, a pivot pin extending through thefQIf-kS the harp, a bra.cket on the pin ireely irotatable with referencetothe harp ,and haying slid aing contact ,faces at ,opposite sides ofthe pivot 1 pin, 7 a removable year shoeat one, end of one of said facesand a roller at the other e al o ad pt :t engag th Mite, Substantiallyasset iorth. c

3. A troll y mpr sing :2 fl n- 712, a pivo pin extending th 'ongh theftn lts of .;the :harp, a bracket-on the pin ,fi'eely rotatable .Withtrefeljence ;t0 -the harp and having sliding contact faces at -oppo s ite .sides of the Pivot P a a rolle towing a lpa of @1 of S i cont ti e...$nb$tanti=. y as ,get iforth.

4 111 a trolley, a pivoted bracket having a sliding contact face at oneside for engagement with the trolley Wire -When the device-is moving-inone direction and having at the other side a sliding contact face and aroller for engagement With the trolley ,yg iye when moving in theopposite direct1on the roller being then in the lead, substantially asset 2 iorth.

In air-alley tae e tempn ia J u n anprqxi at y il ana e some fac a "cape iid .e t 1' o -real, t ii i ab ea e ha 91 i sai w s st t s e aian ared y -eat w a lim ding -th esh .p'a- (a th i et :iznt enemastmi ae i a-1 Q tll tieer a me n i teer n rsa i ex e ion position, substantially ,assetfiorth.

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PL- :Smilea O. S. BQLING.

